Home / 72,168.36-99,635.40-45,333.84

Finding the Fourth Proportional to 72,168.36, 99,635.40 and 45,333.84

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Solution

The fourth proportional to 72,168.36, 99,635.40 and 45,333.84 is: 62,587.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,168.36 : 99,635.40 = 45,333.84 : x
  2. Step 2: Convert to fraction form
    72,168.36/99,635.40 = 45,333.84/x
  3. Step 3: Cross multiply
    72,168.36x = 99,635.40 × 45,333.84
  4. Step 4: Simplify right side
    72,168.36x = 4,516,855,281.94
  5. Step 5: Solve for x
    x = 4,516,855,281.94/72,168.36
  6. Step 6: Final answer
    x = 62,587.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.